Our take

"A modern classic of hi-fi! One of the most affordable planar magnetic headphones on the market. You get the low distortion and transients typical of this technology, which HiFiMAN has mastered for so long." - Victor Malvolti

Hi-Fi planar magnetic headphones

The HE-400SE is the entry-level model from headphone maker HiFiMAN. It uses the planar magnetic (or orthodynamic) technology that made the brand successful. This SE version is the latest iteration of the 400 series, a best-seller of modern hi-fi.

What is a planar headphone? What are its advantages over dynamic drivers?

The dynamic drivers found in most headphones use voice coils that drive limited areas of the diaphragm, so much of the diaphragm is not used to its full capacity. Planar drivers, on the other hand, have conductive layers covering almost the entire diaphragm, resulting in much lower distortion than conventional dynamic drivers.

New "Stealth Magnets"

The "SE" version of the 400 series features the new, higher-performance Stealth Magnets. Their special shape makes them more acoustically transparent, greatly reducing distortion.

A more comfortable model

The HE-400SE's new adjustable headband makes it even more comfortable than its predecessor. It is also lighter and more pleasant to wear when the room is warm.

The drivers are protected by a new frame, which makes the headphones even more durable.

Specifications

• Frequency response: 20 Hz - 20 kHz
• Impedance: 25 ohms
• Sensitivity: 91 dB
• Weight: 390 g

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